Machine for gluing cartons



June 3o, 1931. C, 'Q G. SCHMIDT 1,812,666

IACHINE FOR GLUING CARTONS Filed Aug. 28, 1928 ,5 Sheets-Sheet l June30, 1931. c. G. G. SCHMIDT MACHINE FOR GLUING -CARTONS 3 Sheets-Shet 2F'led Aug. 28, 1928 June .30, 1931. c. G. G. SCHMIDT UACHINE FOR GLUINGCARTONS Filed Aug. 215. 1928 3 Sheets-Sheet 3 555%@ btomud WWK@ PatentedJune 30, 1931 UNITED' STATES 12M-*ENT .ori-"ics-l i CHARLES; G. G.SGIIIWUID'I,` 0F NEW YORK, N. Y. ASSIGNOR T PINAUD INCORPQRATED,

OF NEW YORK, ZN. Y., A; CORPCRATION OF NEW YORK MACHINE FOR GLUINGCAR'JIONSv Application filed August 28, 1928. Serial N0. 302,497.

This invention relates to an improved machine for gluing cartons andmore particularly triangular cartons. i

' Hitherto, in this art, it has been found irnpossible to developamachine to turn out satisfactorily a triangular carton. No machine, upto the present invention, has been devised for gluing and forming a.triangular carton with three creases only, so that the finished packageis a perfect triangle without any side being broken by additionalscoring. In all previous practices, an additional crease had to be addedso as toglue under a press as is done with rectangular cartons.

`The present invention produces a machine for gluing a triangular cartonwith three creases only which occur at the corners and sothat thefinished article presents a perfect trianglefwith smooth'sides unbrokenby an additional scoring. The invention thus lls a long-felt need inthe'industry, as vit provides for the first time a machine for makingsatisfactorily a triangular carton.

Further objects and advantages of the in- A vention will appear as thedescription proceeds.

In the drawings:

Figure 1 is aside elevation of a machine constructed `in accordance withthe present invention.

Figure 2 is a plan view thereof. Figure 3 is a transverse sectional viewtaken as on the line 33 of Figure 2.

Figure 4 is a section on an enlarged scale, in elevation, of a carton asoperated upon in the practice of the invention. Y

Figure 5y is a side elevation of,` a fragment of the construction,illustrating the means for removing the finished carton from themachine.

Y Figure 6 is a plan view of a modification. Figure 7 is a. sideelevation of a modification.

In detail, the invention is embodied in a construction which, as shownin Figures 1 to 5, may be in the form of a machine having frame members10 such as angle irons or beams positioned at four corners as shown inFigure 3 and supported by suitable legs 11 5 9 and braces'lZ. Themachine includes an and.

'describedare also optional and these conless belt 13 of leather or suchmaterial which is arranged in a vertical plane andv extends over pulleys14. The pulleys are mounted on horizontal pivots 15 supported by journalmembers 16, the latter being carried'by the frame members 10 andattached thereto as-by bolts 17. The pulley mounting construction may beas shown in Figure 3 with the pulleys positioned between the pointedpivots" or bearings 15 which are carried on the journal members. Thisconstruction reduces friction Iand allows easy rotation of the pulleys.The

bolts 17 extend thru slots 18" in the members 10, thus providing foradjustment of the.V

journal members 16' whereby they belt tension may be varied and adjustedat will.` The journal members `may be maintained at the desiredseparation by means such as blocks 19 with adjusting screws 2,0. Theseblocks` i may, for example, be mounted between the framey members 1 0 asshown in Figure 1 and Vattachedin position by suitable fasteningelements 21. j

Means for continuously driving the belti and preferably for causing aconstant movement thereof, are provided, and7 as shown,

`includes a sprocket 22 on the end of a pulley shaft. The sprocket isdriven by a chain 23 from another sprocket 24 which derives its" motionor rotation from; an electric motor unit 25.V The latter may be mountedon a Aplatform 26 beneath the belt and supported in any desired manneron the legs 11 and on other vertical elements or columns 27. course,lthis type of drive is purely optional and may be altered at will and anymeans for moving the belt may be employed in the practice of theinvention. The pulley mounts structions may also be varied or altered inthe practice of the invention. The rotation of the sprocket 22 in theconstruction illus-- ytrated causes the rotation of the pulley shaft andalso of the pulley mounted on the shaft and, consequently, the belt isdriven by friction by the pulley and thus caused to move.

The belt may also travel over idle pulleys 2S supported on the framemembers 10, the idle pulleys being provided to prevent sagf ging of thebelt and to maintain a tension thereon.

The construction, as thus far described, is analogous to the usualconveyor of the belt type. This construction is therefore to beconstrued as optional and illustrative. The machine is, however,designed for the gluing' of triangular cartons, as represented bynumeral 29 in Figure 4. The belt is provided with retaining members 30which are spaced at intervals along its length and held in place byfastening elements 32. These members may, for instance, be of sheetmetal with upturned ends forming resilent fingers 31, bent to closelyembrace the lowerends of the cartons. The fingers exert a light,resilient grip upon the cartons and hold them e1;- actly as the humanhand would hold them if the gluing were done by hand. The cartons areformed 'as shown in Figure 4 with three creases only which occur at thecorners and so that the finished article is a perfect triangle with allthe sides smooth and unbroken b v an additional scoring. One end of thesheet from which the carton is formed terminates at a corner of thecart-on and the other end is folded beneath it. The folded end is gluedto the side under which it is placed by hand and the attendant then'places the carton in a freshly glued state in the machine and betweenthe fingers, 3l, as shown in Figure 4, so that the glued side is firmlyheld and the carton maintained in a fixed position between the fingers.These fingers hold the carton i ust like a human hand would and thecarton isnotsubject to any appreciable pressure but comes out of themachine uncrushed and a perfect triangle with smooth sides unmarred byadditional creases or scorings. In the carton shown, one of the cornersis a right angle, so that the finger engaging this corner is at a rightangle or perpendicular to the belt, while the finger engaging the othercorner having the glued ends isat an angle less than a right angle tothe belt. In the travel of the belt, the perpendicular end is inadvance, which facilitates removal of the cartons as sho-wn in Figure 5.

The cartons travel to the right as seen in Figure l and are taken mi thebelt at the right hand side of the machine just after passing over thepulley. By this time, the glue of the cartons has suiiiciently dried tomaintain the carton formations and shapes. The ejection of the cartonsmay be by a stop 33 which is shown carried on abracket 34 secured andattached to the frame members 10. The stop projects in the path of thecartons and as shown in Figure 5, forces them out of engagement with theangular ends 31 permitting the cartons to fall. The Cartons may beguided by the curved portion 35 of the bracket 34 int-oa chute or otherrepository therefor which may be provided beneath the guide 35.

A modification of the invention is shown in Figures 6 and 7 whichdiffers from the former in all practical purposes only in that the beltpasses over pulleys having vertical shafts. fn this case, the belt isarranged in a horizontal plane and the fingers exert sufficient gripupon the cartons to hold them horizontally. The motor unit 25a in thismodification is supported between the frame members 10a and drives asprocket 24a which connects thru a chain 23a to the sprocket 22a, thelatter driving, thru bevel gears 36, the shaft of the pulley. The stopsor carton ejecting means are herein shown at 33:L and, of course, differsomewhat in construction from the former design. Otherwise, themodification is similar to the former and is provided with legs 11' andbraces l22L for supporting the appa ratus.

lVhile the specific constructions shown are preferred, it will beunderstood that varia tions and alterations may be made therein in thepractice of the invention and without departing from the scope thereofor of the ap pended claims.

ltfhat I claim is l. A machine for gluing triangular cartons formed fromsheet material with three creases only and with one end of thesheetterminating at corner and the other end folded beneath the firstend and glued thereto, comprising retaining fingers between which twocorners of a. carton are gripped, one of said corners being the cornerof thev glued ends of the sheet material, said fingers acting to lightlyurge the glued ends together while firmly retaining the cartontherebetween without crushing.

2. A. machine for gluing triangular cartons formed from sheet materialwith three creases only and with one end of the sheet terminating at acorner and the 4other end folded beneath the first end and gluedthereto, comprising a sheet metal member. with up-turned ends formingresilient fingers betweenwhich two corners of a `carton are gripped, oneof said corners bein the corner of the glued ends of the sheet material,said fingers acting to lightly urge the glued ends together while firmlyretaining the carton therebetween without crushing.

3. A machine for gluing triangular cartons formed from sheet materialwith three creases only and with one end of the sheet terminating at acorner and the other end folded beneath the first end and glued thereto,comprising means forming fingers between which two corners of a cartonare gripped, one of said corners being the corner of the glued endsofthe sheet material, said fingers acting 'to lightly urge the gluedends together while firmly retaining the carton therebetween Withoutcrushing, a belt on which the fingers are mounted, means for moving thebelt, and

means for removing the cartons therefrom after a predetermined amount oftravel.

4. A machine for gluing cartons formed from sheet material with one endof the sheet terminating at a corner and the other end folded beneaththe first and glued thereto, comprising retaining lingers between Whichtwo corners of a carton are gripped,oneof said corners being the cornerof the glued ends of the sheet material, said fingers acting to lightlyurge the glued ends together While firmly retaining the cartontherebetween Without crushing.

5. A machine for gluing triangular cartons Jformed from sheet materialWith one end of the sheet terminating at a corner and the other endfolded beneath the lirst and glued thereto, comprising means forming apair of lingers between Which two corners of a carton are gripped, abelt on Which the lingers are carried, one of said lingers beingperpendicular to the surface of the belt, and the other at an angle lessthan a right angle With respect thereto, the perpendicular end being inadvance in the travel of the belt, means for moving the'belt, and meansfor removing the carton therefrom after a predetermined amount oftravel.

6. A machine for gluing triangular cartons comprising a belt on Which ismounted a gripping means compri-sing a sheet metal member with endsup-turned to form resilient retaining lingers, one of said fingersforming a right angle with the central portion of said member and theother nger forming an acute angle with said central portion, means formoving the belt so that the perpendicular linger precedes the otherfinger, and means for removing the carton from said gripping meanscomprising a stop against Which the carton strikes.

7. A machine. for gluing triangular cartons comprising a belt on Whichare mounted a plurality of gripping means comprising sheet metal membersWith ends up-turned to form resilient retaining fingers, one of saidfingers forming a right angle with the central portion of said memberand the other finger forming an acute angle With said central portion,means for moving the belt so that the perpendicular linger of eachmember precedes the other finger, and means for removing the cartonsfrom said gripping means comprising a stop against Which the cartonstrikes.

8. A machine for gluing triangular cartons comprising a belt on Whichare mounted a plurality of gripping means comprising sheet metal memberswith ends up-turned to form retaining lingers, one of said fingersforming a right angle with the central por tion of said member and theother finger forming an acute angle With said central portion, means formoving the belt so that the perpendicular finger of each? memberlprecedes: the other finger, Vandi-means for removing: theA cartons fromlsaid gripping means comprising' astopi against` which the cartonstrikes.` A

9a A machine: for gluing triangular'cartons; comprising a belt, pairs*`of resilient retaining lingers proj ectingfrom said belt, one

of said fingers in eaclrpair being substantially perpendicular to saidbelt and; the other at such. an angie that it firmly presses the cartonagainst the belt and against said perpendicular linger Withoutdistorting the car-` tially perpendicular tofsaidr belt and the other atsuch an angle that'it lirmly presses the carton against the bel-t andagainst said perpendicular finger Without distorting the car ton,Imea-ns for moving the belt so that the perpendicular finger of each pairprecedes the otherfinger, and: means for removing the carton'VV from,sa'idr gripping means comprising a Vstop against which the'cartonstrikes- V 11.; A machine for gluingtriangular cartons comprising abelt, pairs of retaining lingers projecting from said belt,'one of saidfingersin each pair being substantially perpendicular to said belt andthe other at such an angle thatV it firmly presses the carton againstthe belt andv against sai-d perpendicular linger Without distorting thecarton, means for moving the belt, and means for removing the cartonfrom said gripping means comprising a stop against Which the cartonstrikes.

l2. A machine'for gluing triangular cartons comprising a belt, pairs ofresilient retaining lingers projecting from said belt, one

of said fingers in each pair being substantially perpendicular to saidbelt and the other at such an angle that it firmly presses the car-- tonagainst the belt and Vagainst said perpendicular finger Withoutdistorting the carton, means for moving the belt, and means for removingthe carton fromV said gripping means.

13. A machine for gluing triangular cartons comprising a belt on Whichare mounted a plurality of gripping means comprising sheet metal memberswith ends upturned to form resilient retaining fingers, one of saidfingers forming a right angle With the central portion of said memberand the other nger forming an acute angle With said central portion,means for moving the belt so that the perpendicular finger of eachmember precedes the other linger, .and means for removing the cartonsfrom said gripping means.

14. A machine for gluing triangular cartons comprising a belt on whichare mounted a plurality of gripping means comprising sheet metal memberswith ends up-turned to form resilient retaining ingers, one of saidlingers forming a right angle with the central portion of said memberand the other finger forming an acute angle with said central portion,means for moving the belt, and means for removing the cartons from saidgripping means comprising a stop against which the cartons strike.

15. In a machine for gluing triangular cartons a sheet metal member withup-turned ends forming resilient retaining lingers between which thecarton is gripped, one of said lingers forming a right angle with thecentral portion of said member and the other forming an acute angle withthe central portion of said member.

16. In a machine for gluing triangular cartons a sheet metal member with11p-turned ends forming resilient retaining fingers between whioh thecarton is gripped, said re taining fingers forming such angles with thecentral portion of said member that they retain the carton in thedesired shape.

17. A machine for gluing cartons comprising a belt, retaining fingersprojecting from said belt, means for moving said belt, and means forremoving the cartons from said lingers comprising a stop against whichthe carton strikes.

In testimony whereof, I have signed my name to this specification this21 day of August, 1928.

CHARLES G. G. SCHMIDT.

